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Finding the Fourth Proportional to 10,885.75, 15,022.46 and 5,917.75

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Solution

The fourth proportional to 10,885.75, 15,022.46 and 5,917.75 is: 8,166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.75 : 15,022.46 = 5,917.75 : x
  2. Step 2: Convert to fraction form
    10,885.75/15,022.46 = 5,917.75/x
  3. Step 3: Cross multiply
    10,885.75x = 15,022.46 × 5,917.75
  4. Step 4: Simplify right side
    10,885.75x = 88,899,162.67
  5. Step 5: Solve for x
    x = 88,899,162.67/10,885.75
  6. Step 6: Final answer
    x = 8,166.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.